#263B8C#263B8C

#263B8C is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.137 H 268.3°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#263B8C
RGB	rgb(38, 59, 140)
HSL	hsl(228, 57%, 35%)
HSV	hsv(228, 73%, 55%)
CMYK	cmyk(72.9%, 57.9%, 0%, 45.1%)
CIE-LAB	lab(27.93, 21.16, -47.50)
CIE-LCH	lch(27.93, 52.00, 294.01°)
OKLab	oklab(38.67% -0.0041 -0.1369)
OKLCH	oklch(38.67% 0.137 268.3)
XYZ	xyz(7.0953, 5.4327, 25.4805)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263B8C #8C7726

analogous

#266E8C #263B8C #44268C

triadic

#263B8C #8C263B #3B8C26

tetradic

#263B8C #8C266E #8C7726 #268C44

square

#263B8C #8C266E #8C7726 #268C44

split-complementary

#263B8C #8C4426 #6E8C26

monochromatic

#0C122C #19275C #263B8C #334FBC #5A73D2

Accessibility & contrast

On white

10.06

#263B8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#263B8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263B8C

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263B8C	#FFFFFF	#000000	##FFFFFF
##263B8C	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478F

Deuteranopia (green-blind)

#003D8A

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #263b8c;
/* rgb */ color: rgb(38, 59, 140);
/* oklch */ color: oklch(38.7% 0.137 268.3);

Tailwind

colors: {
  custom: {
    50: '#6f70ae',
    500: '#263b8c',
    950: '#000000',
  },
}

SCSS

$custom: #263b8c;
$custom-light: #6f70ae;
$custom-dark: #000000;

JSON

{
  "hex": "#263b8c",
  "rgb": {
    "r": 38,
    "g": 59,
    "b": 140
  },
  "hsl": {
    "h": 227.647,
    "s": 57.303,
    "l": 34.902
  },
  "oklch": {
    "l": 0.3867,
    "c": 0.13692,
    "h": 268.3
  },
  "luminance": 0.05433
}

Semantic roles & 50–950 ramp

primary

#263B8C

secondary

#B7A357

accent

#C147E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #263B8C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →